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9 July 2004 Far-field technique for tunable coupling to high-order guided modes of photonic crystal fibers
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Abstract
We investigate the potentials of using a far-field technique for tunable coupling to high-order guided modes of photonic crystal fibers. The field distribution matched for coupling to the fiber is generated by the optical Fourier transform of grating-based phase patterns dynamically encoded on a spatial light modulator. Tuning the parameters of phase-only binary diffractive patterns can modulate both amplitude and phase of the coupling field. Experiments demonstrate tunable and spatially controllable coupling to the second-order mode of a commercially available index-guided micro-structured fiber with a triangular lattice air-hole structure.
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Vincent Ricardo Daria, Peter John Rodrigo, and Jesper Gluckstad "Far-field technique for tunable coupling to high-order guided modes of photonic crystal fibers", Proc. SPIE 5360, Photonic Crystal Materials and Devices II, (9 July 2004); doi: 10.1117/12.528944; https://doi.org/10.1117/12.528944
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